I need to build a couple of tonearm pods. I've picked up 12-15 pounds of wheel weights from my local tire dealer, and will use green bean cans to mold a couple of bases. The top 2 inches will be made out of mesquite from the front pasture. The question is: should I bolt the mesquite directly to the lead, or put a layer of cork/silicone/rubber in the middle? Or are bolts a bad idea, and simply use caulking to connect them?